SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ks-wycena.pl
SSL/TLS Certificate
SSL/TLS Certificate for ks-wycena.pl
Hostname mismatch- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.tld.pl
- Valid from
- Jan 9, 2026
- Valid until
- Jan 9, 2027 (155 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 6DF3847444CBCE18088BDBE9A9B1D7C9
- SHA-256 fingerprint
- 94:B0:65:19:03:AE:70:12:59:5C:78:69:8B:C3:52:22:FC:52:7B:EA:95:F4:5B:93:13:01:A4:78:91:08:40:C3
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ks-wycena.pl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ks-wycena.pl continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
Free for your first domain: uptime, DNS, and certificate together. No credit card.